I use a small brush and pan for sweeping the inside of the tent.
As part of my cook kit, I have a stacking set of plastic bowls - the big one is useful for fruit/salad, washing up, throwing bits into as I prep meals (for binning later) etc. There is a medium one which can mostly do the same but has holes so can do colander duty, and there is a smaller one as well. Came from Aldi.
Another Scout leader in our group mentioned using blue Ikea bags as gear bags when car camping - much easier for smallies to find things than a duffel bag, and easy to throw into the car at the end. (One becomes the dirty laundry bag for packup, which goes straight to the washing machine when they get home).
Flask is a definite need in our case - whenever I boil a kettle, I put any leftover water into the flask to use later (washing up especially, but clean hands, cooking, quick cup of tea etc). And at night, fill it with tea going to bed for the first thing in the morning cup.
I got a couple of good, sharp kitchen knives, but with covers on them (to protect fingers!). I keep all my kitchen tools in an Ikea Samla carrybox, which fits into an 11l or 22l Samla box - this is my self-catering OR camping set. Mostly the same stuff - but SC need dishwasher tabs and washing powder tabs, whereas camping needs plenty of matches!
The kitchen tools are basically the cheap Ikea plastic set including a tongs, whisk, spatula etc; sharp knives; scissors; corkscrew; tin opener; wooden spoon; vegetable peeler; set of bamboo sticks (?? cannot remember the name of them, but to use as skewers on BBQs etc, bought in regular kitchen store). Along with that are a small roll of black sacks, handful of Ziploc bags for storing all sorts, couple of j-cloths, 100ml travel bottle (which I refill at home - from Muji) of washing up liquid, 3 tea towels, washup brush, 1 pot scrubber, a handful of clothes pegs, length of thin chord, 1 set silicon pot holders, 1 small packet of wipes, 1 kitchen roll and always 2 toilet rolls! Lots of matches, some wrapped fire lighters, spare bootlaces, spare batteries (for torches). And my salt and pepper and chilli mills (the type from the spices aisle that have the mill in the top of the jar), and a small bottle of olive oil, and some sachets (from McD's etc) of ketchup and (coffee shops) sugar. When we are preparing to go anywhere, I add a Ziploc bag of teabags, and another with any sachets I have of hot choc, coffee etc, or maybe some herbal tea (chamomile etc) if I think I need it.
I have a drawstring bag per person (the kind you might use for swimming gear) to hold wash kit, towel (microfiber), flip flops, spare carabiner and clean clothes - to easily trek to shower block, hang for use, and trek back without anything showing.